21375741

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{101}}^1$

素因数の和:249

約数の個数: 32

約数和(自身を含む): 31334400

約数和(自身を除く): 9958659

約数列:

[1, 3, 19, 47, 57, 79, 101, 141, 237, 303, 893, 1501, 1919, 2679, 3713, 4503, 4747, 5757, 7979, 11139, 14241, 23937, 70547, 90193, 151601, 211641, 270579, 375013, 454803, 1125039, 7125247, 21375741]

約数ペア:

[(1, 21375741), (3, 7125247), (19, 1125039), (47, 454803), (57, 375013), (79, 270579), (101, 211641), (141, 151601), (237, 90193), (303, 70547), (893, 23937), (1501, 14241), (1919, 11139), (2679, 7979), (3713, 5757), (4503, 4747)]